<template>
  <div>
    <button @click="startAnimation">点击开始动画</button>
    <div class="box" :style="{ animationDelay: animationDelay + 's' }">
      {{ msg }}
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      animationDelay: 0,
      msg: "Hello",
    };
  },
  methods: {
    startAnimation() {
      this.animationDelay += 0.5;
    },
  },
};
</script>

<style scoped>
.box {
  width: 100px;
  height: 100px;
  background-color: blue;                
  animation: move 2s linear infinite;

  /* 行高可以使得字体居中 */
  line-height: 100px;
  color: aliceblue;
}

@keyframes move {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(100%);
  }
}
</style>
